Analysis of laser pulse chirping in mode-locked vertical cavity surface-emitting lasers
Analysis of laser pulse chirping in mode-locked vertical cavity surface-emitting lasers
复制标题
锁模垂直腔面发射激光器中激光脉冲啁啾分析
DOI：
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发表时间：
1993
期刊：
影响因子：
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通讯作者：
J. Bowers
中科院分区：
文献类型：
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作者：
Wenbin Jiang;Dennis;Derickson;J. Bowers
锁模垂直腔激光器具有大的横截面积，因此具有大的饱和能量和大的峰值功率。作者分析了这些激光器中产生的多余光带宽，发现由于光泵浦和增益饱和引起的自相位调制是导致激光脉冲啁啾的主要因素。啁啾的大幅度使得腔内棱镜对补偿困难。调整腔长对脉冲啁啾有重要影响，如实验所观察到的。适当的调整可以导致大的线性频率啁啾，其可以使用外部脉冲压缩技术来补偿。>
Mode-locked vertical cavity lasers have a large cross-sectional area and consequently a large saturation energy and large peak powers. The authors analyze excess optical bandwidth generation in these lasers and find that self-phase modulation due to optical pumping and gain saturation is the dominant factor in inducing laser pulse chirping. The large magnitude of the chirp makes intracavity prism-pair compensation difficult. Adjustment of the cavity length has a major impact on the pulse chirping, as observed experimentally. Proper adjustment can result in a large linear frequency chirp which can be compensated using external pulse compression techniques. >